Painful joints can be an indication of a number of conditions, including arthritis. If you're experiencing painful joints, it's important to speak with your doctor to determine the cause and receive proper treatment. There are several synonyms for painful joints, including achy joints, sore joints, stiff joints, and tender joints. These synonyms are useful for describing the type of discomfort you're experiencing and can be helpful when discussing your symptoms with your doctor. It's important to note that while painful joints can be bothersome, there are many treatment options available that can alleviate pain and improve joint function.